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In safety critical applications, fault tolerant controllers are very important. In this paper a generalized fault tolerant digital controller for power electronic applications is presented. Three fixed point digital signal processor (DSP) based controllers are used in parallel, running the same control algorithm. The PWM outputs of three DSPs are voted out to one PWM output using a simple fault tolerant...
The paper deals with the sliding mode control of inverter and its applications to custom power devices. Sliding mode control is used to control the voltage source inverter in voltage and current control mode. The sliding mode control strategies provide robustness to custom power device modeling with external disturbances. The proposed controller design is tested on a single phase dynamic voltage restorer...
Voltage sags and swells are vital power quality problems and the dynamic voltage restorer (DVR) is known as an effective device to mitigate voltage sags and swells. The paper deals with the sliding mode control of single phase DVR for voltage sag/swell correction. A sliding mode controller is designed and developed for a single phase DVR. Using sliding mode control to the DVR, additional sag/swell...
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